package com.poposchool.project.intercepter;

import cn.hutool.core.util.StrUtil;
import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTVerifier;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.exceptions.JWTDecodeException;
import com.auth0.jwt.exceptions.JWTVerificationException;
import com.poposchool.project.common.Constants;
import com.poposchool.project.configure.AuthAccess;
import com.poposchool.project.entity.TotalUser;
import com.poposchool.project.exception.ServiceException;
import com.poposchool.project.service.ITotalUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class JwtInterceptor implements HandlerInterceptor {

    @Autowired
    private ITotalUserService userService;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
//        String token = request.getHeader("Authorization");
//
//        // 如果不是映射到方法直接通过
//        if(!(handler instanceof HandlerMethod)){
//            return true;
//        } else {
//            HandlerMethod h = (HandlerMethod) handler;
//            AuthAccess authAccess = h.getMethodAnnotation(AuthAccess.class);
//            if (authAccess != null) {
//                return true;
//            }
//        }
//        // 执行认证
//        if (StrUtil.isBlank(token)) {
//            throw new ServiceException(Constants.CODE_401, "无token，请重新登录");
//        }
//        // 获取 token 中的 user id
//        String userId;
//        try {
//            userId = JWT.decode(token).getAudience().get(0);
//        } catch (JWTDecodeException j) {
//            throw new ServiceException(Constants.CODE_401, "token验证失败，请重新登录");
//        }
//        // 根据token中的userid查询数据库
//        TotalUser user = userService.getById(userId);
//        if (user == null) {
//            throw new ServiceException(Constants.CODE_401, "用户不存在，请重新登录");
//        }
//        // 用户密码加签验证 token
//        JWTVerifier jwtVerifier = JWT.require(Algorithm.HMAC256(user.getPassword())).build();
//        try {
//            jwtVerifier.verify(token); // 验证token
//        } catch (JWTVerificationException e) {
//            throw new ServiceException(Constants.CODE_401, "token验证失败，请重新登录");
//        }
        return true;
    }
}
